package day20171128;
class A{
    void operate(int c[]){
        int i;
        for (i=0;i<c.length;i++)c[i]=3*c[i];
    }
}
public class Test04 {
    public static void main(String[] args) {
        A a=new A();
        int b[]={1,2,3,4};
        a.operate(b);
        for (int i=0;i<b.length;i++)
            System.out.println(b[i]);
    }
}
